Wringing-machine



UNITI-3D STATES PATENT OFFICE.

RANSOM G. BALDWIN, OF OSKALOOSA, IOWA.

WRING INGMACH|NE.

SPECIFICATION formingpart of Letters' Patent No. 238,271, dated March 1, 1881. Application filed DecemberlS, 1880. (Model.)

To all whom it may concern:

Be it known that I, RANsoM G. BALDWIN, ot' Oskaloosa, inthe county of Mahaska and State of Iowa, have invented certain new and useful Improvements in VVringing-Machines;

and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains toV make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

Figure l of thev drawings is a perspective view of my invention. Fig. 2 is a longitudinal vertical section thereof. Figs. 3 and 4 are detail views, in perspective, of the upper and lower halves or sections of the cam for regulating the pressure upon the upper roll of the wringing-machine. Fig. 5 is a vertical` longitudinal section of the two cam-sections when together.

The present invention has relation to certain new and useful improvements in wringing-machines, and has reference more particularly to that class in which a cam-lever is employed for operating a pressure-bar, which, in turn, regulates the pressure of the upper wrin ging-roll upon the lower one.

The object of the invention is to provide the pressure-bar with a horizontally-operatiu g cam s0 constructed that great cam-pressure is Voby tained with as little friction as possible, the

pressure upon the bar being equalized upon its opposite ends, and consequently more perfeet in its operation and action upon the upper wringing-roll of the machine. These objects I attain by the construction shown in the drawings and hereinafter described.

In the accompanying drawings, A represents the slotted standards, secured together on their front and rear sides by strips c, which also serve to guide the clothes to and from the rollers.

To the upper or slotted ends of the standards A is detachably connected, by suitable bolts, a rigid cross-bar, B, which, together with the side strips, a, and standards, form the frame-work of the machine.

C is the upper, and B the lower, wringingroller, the journals of the lower roller resting upon the bottom of the slotted portion of the standards, and one of said journals is provided with a suitable handle, b, for revolving it. The upper roller, C, which is supported by resting upon the lower roller, has looselyiitting journal-boxes c, which embrace the upper portion ot' its journals, and are capable of vertically moving Within thev slotted stand-M ards as the pressure of the roller Gis being adjusted. Above the boxes c are rubber or other suitable springs, d, which bear upon the boxes` within the slotted standards A.

A pressure-bar, E, has tenoned ends, which tit loosely within the slotted standards A, and are capable of free vertical movement therein, the springs d supporting` the tenoned ends of the pressure-bar.

To the upper side or face ot' the pressurebar E is secured the lower section, F, of a compound cam, to be presently described,the upper section, G, ot' which is provided with a suitable handle, e, tor operating it, and is held in operative contact with said lower section by a pin or bolt, H, passing down through the rigid cross-bar B, and through a central bore, f, in the upper section, and into asimilar central bore, g, in the lower section, the bolt H being held stationary by a pin, h, passing through the rigid cross-bar B and bolt.

A suitable washer, fi, is interposed between the upper section of the cam and rigid crossbar, to prevent the upper section from coming in contact with the under side of the crossbar, thereby preventing any wear by friction of said bar.

The slotted portions of the standardsA are held firmly together by means of wroughtmetal plates l, one upon each of the standards. These plates, which extend across the endfaces of the standards, have ears 7c at each of their corners, said `ears being bent around to clasp said standards on their front and rear faces.

It often happens that when rubber cushions or springs are placed between the rollerjournals and pressure-bar within these slotted standards the lateral expansionof said rubber springs forces tbeslotted portions of the standards apart, splitting the lower portions, and resulting in the entire destruction ofthe standards.- Itis not enough that the slotted portions of the standards be held by a simple flat metal plate extending across the end portion only of the standards, as the lateral pressure of the rubber springsagainst the inner sides of the slotted standards would wrench the screws loose and break oft' the heads. Consequently the plates would fail to perform their ofce.

The plates I that are employed are composed of heavy wrought meta-l, and as the direction of pressure upon the slotted portion of' the standards is outward the ears-7c prevent undue strain upon the plates, and Wholly prevent or avoid any danger of the breaking apart ot' the standards by the lateral expansion ol' the rubber springs or cushions, the slotted portion ofthe standards bein g firmly held together by the side clampingears.

The compound cam, consisting of the two sections F G, may be of any desired form eX` teriorly, but preferably of the form shown. The lower section, F, by means of ears l, is secured to the pressure-bar B, and is constructed With a central fiat face, m, surrounded by two concentric rings, theinner ring, u, being formed to present an inclined plane with its highest part toward the rear of the machine, While the outer ring, o, is formed on a similar inclined plane, but with its highest part toward the front of the machine and diametrically opposite to the highest portion of the inner ring, n. The upper section, G, of this compound cam is also formed With a iat central portion, mf, and two concentric rings, uf o', with inclined faces similar to those ofthe rings n o, but with the highest points of said rings diametrically opposite to the highest points of the rings upon the section F, so that on turning the handle e from right to leftthe inclined faces ofeach ring will immediately commence to bear upon one another. The arrangement of the ous bearing-pressure immediately above and directly in line with the pressure-bar, it will be evident that a regular and even pressureis brought to bear thereon and throughout the entire length of said bar, which will avoid all jerking of the parts, and will, at the same time, admit ot'the handle being turned to any required distance around without necessitating the employment of ratchets, pawls, or other retaining devices, the form of the cam-surfaces furnishing a complete self-lookin g device,what ever their position.

Having now fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

In a wringing-machine, the combination, with the upper wringing-roller thereof and the loosely-iitting pressure-bar E, ot' the horizontal-operatillg compound cam consisting ofthe sections F G, having inner and outer concentric rings, each having inclined faces diametrically opposite each other, substantially as shown and described.

In testimony that l claim the foregoing as my own I have hereto affixed my signature in presence of tWo Witnesses.

RANSOM G. BALDWIN.

Witnesses:

LoUIs BAGGER, AUGUST PETERSON. 

